We're currently looking at using a hosted Exchange environment. One of the major hurdles that we're looking at is how to deal with email attachments. If I send an email to the guy in the next cube, I sent it to the cloud, and when he opens it, he retrieves it from the cloud. This got me thinking; I know WAAS caches via DRE as described in the "Email Acceleration" section of this page; without a WAAS appliance on the Exchange Host provider side of things, will my WAAS appliance cache the attachment when I send it out to the hosted cloud, and then serve the cached copy to my friend when he opens the attachment?
In other words, would sending an email with attachment that passes through our local WAAS appliance enable the recipient of the email to open the cached copy instead of retrieving it from the cloud? In this setup, both the sender and reciever are behind the same WAAS appliance.
Thanks for any help,